Lubricating means



Nov. 11, 1930. c, BYRON 1,781,493

LUBRIOATING MEANS Filed March 25, 1926 (jam/1M4 w Patented Nov. 11, 1930UNITED STATES PATENT OFFICE CHARLES L. BYRON, OF CHICAGO, ILLINOIS,ASSIGNOR, BY MESNE ASSIGNMENTS, TO THE WAYNE PUMP COMPANY, OF BALTIMORE,MARYLAND, A CORPORATION OI MARYLAND LUBBICATING MEANS Application filedMarch 25, 1928. Serial No. 97,167.

leakage of grease from the high pressure means is prevented when thedevlce is not in use.

Another object is to provide a high pres sure grease gun which is simpleand eflicient and adapted to meet the various requirements under serviceconditions.

These and other objects are accomplished by means of the arrangementdisclosed on the accompanying sheet of drawings, in

which Figure 1 is a fragmentary longitudinal sectional view of a highpressure grease gun' forming a part of the invention and indicating anassociated nipple to receive a charge of grease, and also showing aportion of the flexible grease conducting member which connects the highpressure gun to the relatively low pressure grease supply means or pump,

the high pressure grease gun being shown with its parts arranged whennot in use, or in other words, with its plunger retracted;

Figure 2 is a similar sectional view of the high pressure grease gunwith the plunger advanced for discharging grease under a relatively highpressure;

Figure 3 is a sectional view taken in the plane of line 33 of Figure 1;and

Figure 4 is a fragmentary sectional view on a relatively small scale ofa grease pump or compressor which is connected to the high pressure gun.

The various novel features of the invention will be ap arent from thefollowing description and rawings, and will be particularly pointed outin the appended claims.

The low pressure grease pump or compressor 10 includes a c linder 11 inwhich a piston 12 is reciprocate for drawing grease into the cylinder 11through a member 13 and discharging grease from the cylinder through adischarge connection 14. The member 13 may extend into and be secured toa grease containing barrel 15. Any suitable mechanism may be providedfor operating the piston such as a pinion 16 which meshes with anddrives a rack 17 secured to the piston.

The high pressure grease n includes two slidably mounted telescopicallyarranged cylindrical members 18 and 19, the former of which is providedwith a handle 20 by means of which the gun ma be operated b one hand.The rear of t e hollow cylin rical member 18 is provided with a nipple21 to which one end of a flexible lubricant conducting member or hose 22is connected. The other end of the hose 22 is connected to the dischargeopening 14 of the compressor or pump 10. The other member 19 of the highpressure grease gun includes a grease receiving barrel 23 and a greasedischarge barrel 24, the latter having a rearwardly extendin portionwith apertures 25 by means of whic said barrels 23 and 24 communicate attimes for the passage of grease from the receiving barrel to thedischarge barrel. A plunger 26 is adapted to be reciprocated in sa. 1discharge barrel 24 in a manner such that when the plunger 26 is movedforwardly from its rear position, as shown in Figure 1, intothe positionshown in Figure 2, the plunger compresses grease within the dischargebarrel and discharges the grease outwardly through the nozzle 27, thelatter includin a spring pressed ball valve 28 fo: normal-,7 closing thedischarge opening in the discharge barrel 24. The plunger 26 is thrustforwardly when the handle 20 is thrust forwardly and the nozzle 27 is inengagement with an associated nipple 29 through which grease is forcedto a bearing. The handle 20 preferably is formed integrally with themember 18 as is also the apertured spider 30 which has a stem 31engaging the rear of the plunger 26. The plunger is returned to itsrearward position by a spring 32 interposed between the front wall 33 ofthe grease receiving barrel 23 and an abutment in the form of nut 34secured to the plunger 26. A stationar disk valve member 35 having aplurality 0 circumferentially arranged apertures 36 is secured to theplunger 26 between a collar 37 and the nut 34. Cooperating with thestationary apertured disk valve member 35 is a rotatably mounted diskvalve member 38 having a series of circumferentially spaced apertures39, said r0- tatable valve member 38 being rotatably mounted upon thecollar 37 of the plunger 26 and being held against displacement on saidplunger by a collar 40. This rotatable valve member 38 is provided withtwo projections 41 which are adapted to travel in the cam-shapedguideways 42 formed in the receiving barrel member 23 whereby as theplunger 26 is moved forwardly, through forward movement of the handle20, barrel 18 and stem 31, the rotatably mounted valve member 38 isrotated in a manner to bring the apertures 36 and 39 of the valvemembers 35 and 38 into register, as shown in Figure 2, and likewise,when the plunger 26 is returned by the action of the spring 23, theapertures are moved out of register, as shown in Figures 1 and 3.

As shown in Figure 2, the plunger 26 has cut oil communication betweenthe grease discharging barrel 24 and the grease receiving barrel 23 andhas compressed grease in the forward end of the discharge barrel 24 fordischarging it past the ball valve 28 and under relatively high pressureinto the associated nipple 29 for lubricating a bearing. With the partsas shown in Figure 2, it will be appreciated that the grease underpressure from the pump 10 is forced through the hose 22 into the greasegun and through the-registering apertures 36 and 39 into the front partof the grease receiving barrel 23. When the plunger moves back into theposition shown in Figure 1, grease in the grease receiving barrel 23 isdrawn into the grease discharge barrel 24 as a result of the partialvacuum created therein by the withdrawal movement of the plunger 26. Atthe same time, the apertures 36- and 39 in the relatively rotatabledisks 35 and 38 are moved out of register so that pressure from the pump10 is not transmitted the grease in the grease discharging barre 24, andaccordin 1y, grease is prevented from dripping from t e high pressuregun when the latter is not in use. t will be understood that the spring32 is sufliciently strong to hold the plunger 26 and disks 35 and 38against the pressure with which grease is fed to the gun.

It is my intention to cover all modifications of the invention fallingwithin the spirit and scope of the following claims.

I claim:

1. A high pressure lubricant gun comprising a lubricant receiving barreland a lubricant discharge barrel adapted to communicate with each other,a plunger operable to shut off such communication and subject lubricantin the discharge barrel to an increased pressure and also operable topermit communication between said lubricant receiving and dischargebarrels, and two relatively movable apertured disks mounted within saidlubricant receiving barrel, one of which disks is automatically moved tobring the apertures into register for permitting the flow of lubricantin said receiving barrel under certain circumstances and which is movedinto another position under other circumstances to move said aperturesout of register to prevent the flow of lubricant into said barrel.

2. A high pressure lubricant gun comprising a lubricant receiving barreland a lubricant discharge barrel adapted to communicate with each other,a plunger operable in said discharge barrel for cutting 011'communication between said barrels and discharging lubricant at arelatively high pressure, and a rotatably mounted valve member movablewith the plunger for permitting fiow of lubricant into said recelvingbarrel under certain conditions and which revents flow of lubricant intosaid receivlng barrel under other circumstances to prevent leakage fromsaid gun when the latter is not in use.

3. A high pressure lubricant gun comprlsing a lubricant receiving barreland a lubr cant discharge barrel adapted to communicate with each other,a plunger operable in said dischar e barrel for cutting offcommunication etween said barrels and discharging lubricant at arelatively high pressure, a rotatably mounted valve member movable withthe plunger for permitting flow of lubricant into said receiving barrelunder certain conditions and which prevents fiow of lubricant into saidreceiving barrel under other circumstances to prevent leakage from saidgun when the latter is not in use, and means for controlling themovement of said valve.

4. In a high pressure lubricant gun comprising two telescopicallyarranged relatively movable members, one of said members including alubricant receiving barrel and a lubricant discharge barrel having acommunicating passageway therebetween, a

lunger operable in said discharge barrel or cutting ofi communicationbetween said barrels and discharging lubricant from the discharge barrelat a relatively high pressure, a stationary apertured disk and a movableapertured disk mounted on said plunger of register for preventing flowof lubricant into said receivmg barrel when the plunger is returned toretracted position. I r

5. In a dispensing nozzle for lubricant dispensing apparatus, thecombination of relatively movable telescopically arranged communicatingmembers and fixed -and rotatably movable means in said members andcontrolled thereby for controlling communication into said members, andmeans for controlling communication from said members.

6. In a lubricant dispensing nozzle the combination with adjacentcooperating relatively movable operating members, one of said membersbeing provided with fixed and rotatively movable means, said movablemeans being controlled by the other of said members for controlling theflow of grease into said Other member.

7 In adevice for discharging grease the combination with relativelymovable operating members, fixed and rotatively movable means on one ofsaid members controlled by v the otherof said members for controllingthe flow of grease into said other member and apertures in each of saidfixed and mov able means adapted to register when said first namedoperating members are in position for discharging grease from saiddevice.

8. In a lubricant dispensing nozzle, the combination .of a-casing memberadapted to be supplied with lubricant, a discharge member movablymounted in said casing member, said discharge member having a lubricantdischarge portion, a relatively fixed member mounted on said casingmember and having a portion extending into said discharge portionwhereby movement ofsaid discharge member causes discharge of lubricantfrom said discharge portion by said fixed member, and revoluble meansassociated with one of said members for controlling supply of lubricantto one of, said members.

-9. In a lubricant dispensing nozzle, the combination of a casing memberadapted to be supplied with lubricant, adischarge mem-- ber movablymounted in said casing member, said discharge member having a lubricantdischarge portion, a relativel I fixed member mounted on said casin memr and havinga portion extending 1Ill70-. said discharge portion wherebymovement of said discharge member causes'discharge of lubricant fromsaid discharge portion by said fixed member, and revoluble means in saidcasing for controlling flow of lubricant into said discharge member.

10. In a lubricant dispensing nozzle, the combination of a casing memberadapted to be supplied with lubricant, a discharge member movablymounted in said casing member,

said discharge member having a lubricant discharge portion, a relativelyfixed member mounted on said casing member and having a portionextending into said discharge portion whereby movement of said dischargemember causes discharge of lubricant from said discharge portion by saidfixed member, and revoluble means in said casing operated by saiddischarge member for controlling flow of lubricant into saiii dischargemember. 11. In a lubricant dispensing nozzle, the

combination of a casing member adapted to' be supplied with lubricant, adischarge member movably mounted in said casing member, said dischargemember having a lubricant discharge portion, a relatively fixed membermounted on said casing member and having a portion extending into saiddischarge portion whereby movement of said discharge member causesdischarge of lubricant from said discharge portion by said fixed member,and means in said casing mounted on said fixed member and operated bysaid discharge member for controlling flow of lubricant into saiddischarge member.

discharge portion extending partially with-' in said discharge member,said discharge portion-having anopening therein for receiving lubricantfrom said discharge member, a relatively fixed member mounted on saidcasing member and having a portion extendinginto said discharge portionwhereby tin inoperative position said opening is open, revoluble meanson said fixed member disposed to prevent ingress of'lubricant to saiddischarge member when said opening is open, relative movement betweensaid discharge member and said fixed member causing said fixed member toclose said opening and expel lubricant from said discharge portion, saidrevoluble means being adapted to open to permit ingress of lubricant tosaid discharge member when said opening is closed.

13. In a lubricant dispensing nozzle, the

combination of a casing member adapted to discharge portion extendingpartially with-.

insaid discharge member, said discharge portion having an openingtherein for receiv- 12. In a lubricant dispensing nozzle, the

ing lubricant from said discharge member, a relatively fixed membermounted on said casing member and having a portion extending into saiddischarge portion whereby in inoperative position said opening is open,revoluble means on said fixed member cooperating with said dischargemember, operable by said discharge member to open position topermitingress of lubricant to said discharge member when said opening isclosed.

Signed at Chicago, Illinois, this 22nd day of March, 1926.

CHARLES L. BYRON.

